Home / 78,845.56-118,205.50-45,527.80

Finding the Fourth Proportional to 78,845.56, 118,205.50 and 45,527.80

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Solution

The fourth proportional to 78,845.56, 118,205.50 and 45,527.80 is: 68,255.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,845.56 : 118,205.50 = 45,527.80 : x
  2. Step 2: Convert to fraction form
    78,845.56/118,205.50 = 45,527.80/x
  3. Step 3: Cross multiply
    78,845.56x = 118,205.50 × 45,527.80
  4. Step 4: Simplify right side
    78,845.56x = 5,381,636,362.90
  5. Step 5: Solve for x
    x = 5,381,636,362.90/78,845.56
  6. Step 6: Final answer
    x = 68,255.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.